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Low-velocity matter wave source for atom interferometry produced by Zeeman-tuned laser cooling and magneto-optic trapping



Graduation date: 1997A continuous, low-velocity, nearly monochromatic atomic beam is created using\ud laser cooling and two-dimensional magneto-optic trapping. Rubidium atoms from an\ud effusive oven are slowed and cooled using Zeeman-tuned slowing. The scattering force\ud from a counter-propagating, frequency-stabilized diode laser beam is used to decelerate\ud the thermal beam of atoms to a velocity of ~ 20 m/s. A spatially varying magnetic field is\ud used to Zeeman shift the resonance frequency of the atom to compensate for the changing\ud Doppler shift, thereby keeping the slowing atoms resonant with the fixed frequency laser.\ud This slowing process also cools the beam of atoms to a temperature of a few Kelvin. The\ud slow beam of atoms is loaded into a two-dimensional magneto-optic trap or atomic\ud funnel. The atoms are trapped along the axis of the funnel and experience a molassestype\ud damping force in all three spatial dimensions. By frequency shifting the laser beams\ud used to make the trap, the atoms are ejected at a controllable velocity. The continuous\ud matter-wave source has a controllable beam velocity in the range of 2 to 15 m/s,\ud longitudinal and transverse temperatures of approximately 500 μK, and a flux of\ud 3.4 x10⁹ atoms/s. At 10 m/s, the de Broglie wavelength of the beam is 0.5 nm. The\ud spatial profile of the atomic beam was characterized 30 cm from the exit of the atomic\ud funnel using a surface ionization detector. The low-velocity atomic beam is an ideal\ud source for atom interferometry and a variety of applications in the field of atom optics

Year: 1997
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Provided by: ScholarsArchive@OSU

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  3. (1994). Atom Optics", Physics Reports 240, doi
  4. (1977). Atomic and Laser Spectroscopy," doi
  5. (1986). Atomic Physics of Lasers," Taylor and Francis Inc. doi
  6. (1988). Ballistic methods of measuring g-the direct free-fall and symmetrical rise-and-fall methods compared," doi
  7. (1993). Cesium atoms bouncing in a stable gravitational cavity," doi
  8. (1986). Cooling atoms with stimulated emission," doi
  9. (1984). Cooling of an atomic beam with frequency-sweep techniques," doi
  10. (1989). Evidence for laser cooling in a magnesium atomic beam," doi
  11. (1987). Frequency stabilization of semiconductor lasers by resonant optical feedback," doi
  12. (1991). Influence of adiabatic following and optical pumping in the production of an intense steady flux of slow atoms," doi
  13. Instrumentation for the stable operation of laser diodes," doi
  14. (1984). Intense stationary flow of cold atoms formed by laser deceleration of atomic beam," doi
  15. Laser cooling below the Doppler limit by polarization gradients: simple theoretical models," doi
  16. (1985). Laser manipulation of atomic beam velocities: Demonstration of stopped atoms and velocity reversal," doi
  17. Measurement of the calcium 1131-1D2 transition rate in a laser-cooled atomic beam," doi
  18. (1995). Measurement of the electric polarizability of sodium with an atom interferometer," doi
  19. (1990). New mechanisms for laser cooling," doi
  20. (1995). Observation of Bose-Einstein Condensation in a Dilute Atomic Vapor," Science 269, doi
  21. (1978). Observation of focusing of neutral atoms by the dipole forces of resonance-radiation pressure", doi
  22. (1993). Observation of the scalar Aharonov-B ohm effect by neutron interferometry," doi
  23. (1989). Observation of the topological Aharonov-Casher phase shift by neutron interferometry," doi
  24. (1995). Optics and interferometry with Nat molecules," doi
  25. (1977). Quantum Mechanics," doi
  26. (1989). Quantum reflection: focusing of hydrogen atoms with a concave mirror," doi
  27. (1988). Quantum-state selective mirror reflection of atoms by laser light", doi
  28. Ramsey fringes in atomic interferometry: measurability of the influence of space-time curvature," doi
  29. (1978). Recirculating atomic beam oven," doi
  30. (1986). Reflection of thermal Cs atoms grazing a polished glass surface," doi
  31. (1991). Slowing atoms with a polarized light," doi
  32. (1975). Space-invariant achromatic grating interferometers: theory," doi
  33. (1978). Stabilization of semiconductor laser outputs by a mirror close to the laser facet," doi
  34. (1972). Stegun (editors), "Handbook of Mathematical Functions," doi
  35. (1974). Test measurements with a perfect crystal neutron interferometer," doi
  36. (1985). The ring laser gyro," doi
  37. (1985). Three-dimensional confinement and cooling of atoms by resonance radiation pressure," doi
  38. (1988). Ultra-high sensitivity accelerometers and gyroscopes using neutral atom matter-wave interferometry," doi
  39. (1991). Young's double-slit experiment with atoms: A simple interferometer," doi

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